Axially and angularly adjustable straight beam clamp



M. ZABICH 2,969,817 AXIALLY AND ANGULARLY ADJUSTABLE STRAIGHT BEAM CLAMPJan. 31, 1961 Original Filed May 31, 1952 IN V EN TOR. M5 177? KKK/6'1?BY W W) United States Patent AXIALLY AND ANGULARLY ADJUSTABLE STRAIGHTBEAM CLAMP Martin Zabich, 1136 Center Ave., Verona, Pa.

Substituted for abandoned application Ser. No. 290,995, May 31, 1952.This application Sept. 28, 1959, Ser. No. 846,528

2 Claims. (Cl. 144297) This invention relates to an adjustable alligatorclamp for holding a work piece in connection with gluing or othersimilar operation. This is a substitute of my application Serial No.290,995, allowed May 3, 1954, but abandoned by failure to pay the finalfee.

The primary object of this invention is to provide a beam clamp whichcan readily be adjusted to a variety of clamping positions necessary inefficiently handling gluing operations or the like.

The instant device is an improvement over Patent No. 2,581,317 issued tothe same inventor. The improvement resides in providing means wherebythe movable clamping jaw is restrained from rotary movement about itslongitudinal axis when moving axially to a clamping position.

A further improvement and object of the instant device is to providemeans whereby the movable clamping jaw and the fixed clamping can bemoved bodily laterally relative to their supporting bases so as to be inalignment with variously positioned work pieces.

A still further object and improvement of the instant device is toprovide means whereby the elevation of the moving jaw can be varied tosuit specifically desired working conditions.

Other objects and structural details will be apparent from theaccompanying description, claims and attached drawings wherein Figure lis a perspective view of the device in operative position;

Figure 2 is a sectional view through plane II--II of Figure 1;

Figure 3 is a section taken through plane IIIIII of Figure 2;

Figure 4 is an exploded fragmentary view of the actuating mechanism forthe moving clamp.

Referring to the drawings, the moving clamp assembly is adjustablysecured to a base plate 11 by the nut and screw units 12 and 13 passingthrough perforations 15 in a carrier plate 14 and through slots 16 insaid base plate. Thus, the plate 14 can be shifted laterally relative toplate 11. Base plate 11 is attached to a bench or the like by means ofnuts and bolts in a manner providing access to the operating units 12and 13. Carrier plate 14 is adjustably secured to a sleeve plate 17 bythe adjusting screws 18 and 19, which are threaded in plate 14, andwhich pass through perforations 20 and 21 in plate 17. Nuts 22, 22a, 23and 23a, are all threaded to the screws 19 and 18, as shown, foradjusting the position of plate 17 relative to plate 14. Secured to thesleeve plate 17 by the fastening means 24 are the sleeves 25 and 26.Sleeve 25 is internally threaded and receives the actuating stem 27which is externally threaded and provided with the handle 28. Theforward end of the stem has a head 29 connected to the stem by thereduced neck 30 which passes through the bifurcated yoke 31 formed atthe rear end of the clamping bar 32. Clamping bar 32 is cylindrical inform and is received in the internal bore of the sleeve 26, andcomprises the medial cylindrical portion 33 formed with the guidegrooves 34, the forward jaw portion 35, and the aforementioned rear yokemember 31. Sleeve 26 comprises the internal bore, the enlarged rear bore36 to facilitate making the connection between the yoke 31 and the head29, and the supporting legs 37 and 38 through which pass the fasteningmeans 24. Passing through the boss 39 formed on the sleeve 26 is theguide screw 27a which coacts with the grooves 34 to prevent rotation ofthe clamping jaw 35 when moving forward.

The fixed jaw 40 is carried by the support 41 which is fitted with theholes 42 variously located, whereby both vertical and horizontalpositions of the fixed jaw can be selected.

An offset tongue portion 43 extends from the support 41 and is providedwith the flat connecting plate 44 having the slot 45 which is alignedwith the slot 46 formed in the base plate 47. Plate 44 can be adjustablysecured to the base plate 47 by the nut and screw assemblies 48 and 49,base plate 47 is secured to a work bench in any conventional manner,leaving space for 43 and the actuation of bolts 48 and 49.

In operation the fixed jaw 40 is placed in one of the holes 42 and themoving jaw 35 is rotated to align with the selected position of 40. Theselected adjustment is retained by means of the screw 27a in conjunctionwith one of the slots 34. By means of the screws 18 and 19 the elevationof jaw 35 can be adjusted as desired. Both fixed and movable jaws canthen be shifted laterally to align with the position of the work pieceby means of th adjustable connections to the base plates 11 and 47. Byrotating stem 27, jaw 35 is moved axially to a clamping positionrelative to jaw 40.

It is apparent that the above disclosed device is a suflicient departureand improvement over the preceding patent (2,581,317) and the prior artto warrant a patent grant. A greater degree of adjustability andflexibility to meet varied working conditions has been achieved in thecurrent device while adhering to the demands of simplicity ofconstruction and low fabrication costs.

It should be understood that changes in size, shape and material, all bewithin the inventive scope.

Having thus set forth and disclosed the nature of this invention, whatis claimed is:

1. A clamping device comprising a fixed jaw having a support providedwith a plurality of holes in two transverse planes, said jaw beingconnected to the support by a projection fitting into the holes in asnug fashion, said support having a slotted connecting plate and aseparable slotted base plate, fastening means extending through saidslots whereby the connecting plate and the base plate can be adjustablyconnected, in combination with a moving jaw having a cylindrical bodywith longitudinal grooves slidingly received in a sleeve and having anadjustable guide screw projecting selectively into one of said grooves,said sleeve being connected to a support plate which is connected to acarrier plate by means of a plurality of adjusting screws threaded inthe carrier plate and passing through perforations in the sleevesupporting plate, said screws carrying positioning nuts between thecarrier plate and the support plate, whereby the spacing of the carrierplate can be adjusted relative to the support plate, the carrier platebeing mounted on a slotted base plate by means of bolts passing throughsaid slots and through perforations in the carrier plate whereby the twolast said plates are transversely adjustable, the moving jaw beingrotatable within the sleeve and having forwardly extending teeth wherebythe teeth may be selectively positioned to oppose the fixed jaw in anyof its planes, a second sleeve internally threaded, secured to 3 thesii'pp'or't plate, "ath'readedstem extending through the 'Sbcdh'dsleeve, *8. Handle 'fdr actuating Said 'st'e'm, said stem being swiveledto said moving jaw, whereby rotation of the said handle causes onlyaxial motion of the moving 2. A damping device comprising a fixed {jawhaving as'uppiirtprovid'ecl with ap'lu'r'ality ofholes in two transversevplanes,;sa'id jaw being "connected to the support by a projectionfitting into theholes, a eonn ecting plate 'on "said support, aseparable slotted base plate, fastening means adjustably connecting theconnecting plate and base plate, a'movingjjaw having a cylindrical bodywith longitudinal grooves slidably received in a sleeve and havingadjustable means projecting selectively into one of saidgrooves, saidsleeve being connected to a support plate connected to fa carrier 'plateby means of adjusting screws 'in the carrier plate, positioning means onthe screws between the carrier plate and the support plate whereby thecarrier plate can be adjustably spaced with respect to the supportplate, 'a slotted base 'plate carrying 20 References Cited in the fileiof this patent UNITED STATES PATENTS 306,052 Birch Oct. 7, 1884 990,186Berg Apr. 18, 1911 2,466,209 Clauss Apr. 5, 1949 2,515,536 Suter July18, 19.50 2,581,317 Zabich Ian. .1, 1952

